Peanut Butter Banana Baked Oatmeal

This delicious peanut butter banana baked oatmeal features the best oatmeal combo ever — peanut butter and banana. You’ll love prepping this easy baked oatmeal for the week.

One of my favorite oatmeal recipes to date is this stove top recipe for peanut butter banana chia oatmeal. Peanut butter and banana are simply the best oatmeal combo in my personal opinion and I’m honestly surprised it took me so long to come up with a baked oatmeal recipe that has both!

Slice of peanut butter banana baked oatmeal on a plate with a fork and topped with peanut butter drizzle and sliced bananas.

I thought it would be fun to kick off the New Year with a new baked oatmeal recipe that’s perfect for all your healthy eating goals. No matter how much you indulged over the past few weeks (or months!) you can always decide to make a change. Start with one small change… like eating a healthy breakfast every day!

Glass dish with peanut butter banana baked oatmeal. Baked oatmeal is drizzled with peanut butter and slices of bananas.

Why is Eating Breakfast Important?

Breakfast is often deemed the most important meal of the day? Isn’t it funny that it’s probably the most skipped meal of the day? So why is it so important anyway?

  • Kick start your metabolism – The earlier you eat in the day, the more calories you’ll burn! Seriously.
  • Energy – Food=fuel. Eating breakfast will give you energy to get important tasks done all day long.
  • Concentration – Do you notice that you can’t focus on anything but food when you’re hungry? THAT is why eating breakfast improves concentration throughout the day!

Square baking dish with peanut butter banana baked oatmeal with a slice taken out of it.

Simple Breakfast Idea

Eating breakfast doesn’t have to be complicated. If you’ve been following Eating Bird Food for awhile, you know I’m a big fan of baked oatmeal. They’re the perfect meal prep recipe! Make this simple peanut butter banana baked oatmeal on Sunday and have delicious, healthy and quick breakfasts to enjoy all week long. You can eat it cold or pop it in the microwave or toaster oven for a bit to warm it up before enjoying. The perfect on-the-go breakfast.

Ingredients for peanut butter baked oatmeal in a mixing bowl.

Peanut Butter Banana Baked Oatmeal Recipe

I sound like a broken record but this recipe is so simple to make! Start by mixing the dry ingredients together in a large bowl. Mix in the wet ingredients as well as two sliced bananas. Stir well to combine everything. Pour the mixture into a baking dish that has been sprayed with cooking spray and top with additional banana slices. Bake until golden brown, drizzle with more peanut butter and enjoy! You just made the best gluten-free, dairy-free breakfast around. 😉

Spatula lifting a slice of peanut butter banana baked oatmeal.

Like This Recipe? Here Are More Baked Oatmeal Recipes to Try:

If you make this peanut butter banana baked oatmeal, please be sure to leave a comment and star rating below letting me know how it turns out. Your feedback is so helpful for the EBF team and other EBF readers.

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Peanut Butter Banana Baked Oatmeal

  • Author: Brittany Mullins
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 6


  • 2 cups rolled oats
  • 1/4 cup pure maple syrup
  • 1 teaspoon baking powder
  • 1/2 teaspoon ground cinnamon
  • 1/2 teaspoon sea salt
  • 2 cups unsweetened almond milk
  • 1 Tablespoon ground flaxseed
  • ¼ cup natural peanut butter (plus more for serving)
  • 2 teaspoons pure vanilla extract
  • 3 ripe sliced bananas, divided
  • cooking spray


  1. Preheat the oven to 375°F.
  2. Spray an 8-inch square baking dish with cooking spray.
  3. In a large bowl, mix together the oats, baking powder, cinnamon, and salt.
  4. Add in the milk, maple syrup, flaxseed, peanut butter, vanilla and 2 sliced bananas. Stir well to combine.
  5. Carefully pour oatmeal mixture into the prepared baking dish and top with banana slices. 
  6. Bake for 30 to 35 minutes, until the top is nicely golden. Remove from the oven and let cool for a few minutes. Portion and serve. Drizzle additional peanut butter on top and serve with fresh banana slices. 

  • Category: Breakfast
  • Method: Bake
  • Cuisine: American


  • Serving Size: 1/6 of recipe
  • Calories: 270
  • Sugar: 18g
  • Sodium: 277mg
  • Fat: 9g
  • Carbohydrates: 44g
  • Fiber: 6g
  • Protein: 7g

Keywords: banana peanut butter baked oatmeal

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  1. I made these for the first time this afternoon and made a few minor changes because of what I had in my pantry. I used only two bananas because that’s all I had, snd used peanut butter powder mixed with water for the drizzle on the top. Saved a ton of calories! Also in place of the cinnamon I used Bakers Chai powder (available at the Savory Spice Shop on line ) and they came out delicious! I snuck a taste and can’t wait for breakfast. I made them all summer with blueberries and peaches and froze them and reheated whenever I wanted one!!
    Delicious and so simple and versatile!

  2. These are great! I warmed them up with a bit of jam on top for breakfast this week and YUM 🙂 Will definitely make variations of these again! 🙂

  3. Amazing! I added just a bit of vegan chocolate copes to the top! So yummy and tastes decadent. Also toddler approved

  4. Made this today and it’s perfect! I added an egg just to make sure it held together and it’s excellent.

    • Yay!! I’m so glad you enjoyed this baked oatmeal recipe, Allison! I so appreciate you coming back to leave a comment + star rating. It’s super helpful to other readers. <3

  5. This was so yummy! Peanut butter, banana and oats are truly the best combo so this is a genius recipe! Looking forward to eating breakfast the next few days!

  6. Yum! I made this today with an egg in place of the flax, plus added 1/4cup chia seeds. I cut it into pieces, wrapped in foil and sick in the freezer for easy breakfasts. Can’t wait to really dig in!

  7. My friends loved this recipe, I want to do it again, but can I leave out the peanut butter? or do I need to substitute with something else? Thank you!

    • Hey Lynzi – Did you add any extra liquid to the recipe or change anything about the recipe? And did you let it set prior to eating it? It could have just taken longer due to your oven. Cook times definitely vary based on the heat of your oven. I’m glad you enjoyed it though!!

  8. This is so amazing! I don’t actually like oatmeal in any form (stove top, microwave, overnight) but I love this. My kids love any kind of oatmeal and this was no exception!

    • Hi Helen. I don’t currently provide grams or ml for my recipes, but I will certainly make note of the request. In the meantime, there are online converters that you can use. Sorry for any inconvenience.

  9. This is delicious! I made it this weekend and my family and I ate it all within a day. Will make some more this week! 🙂

  10. I’ve been loving these big baked oatmeal recipes. This one is no exception. I usually double the batch and have been adding 2 eggs or so for a little extra protein. It serves myself, my hubs, and toddler for breakfast most of the week and keeps well, reheats beautifully, and we can all add the toppings we like (syrup for the kiddo every recipe!) I’m thinking of making your chia jam To go with this for PB&J baked oatmeal.

    • Ohhh yes, my chia jam recipe would be amazing with this baked oatmeal!! I’m so glad you loved this recipe, Sonya. Thanks for coming back to leave a comment and star rating. It means the world to me. <3

  11. Me: delicious food! what’s the best way to try all these brilliant recipes. Thinking… Solution: send Britanny marriage proposal.

    Waiting… lol joking. Thanks for the recipes.

  12. Am I assuming correctly that the flaxseed included in this recipe for pb banana baked oatmeal should be ground?

    Looks delicious, I’m excited to try it out. Going to go ahead and grind the flaxseed for this try as it will definitely make a consistency difference.

  13. LOVE this recipe! PB and banana are one of my favorite combos and this didn’t disappoint.
    I didn’t have flaxseed so I just left it out and it was delicious. This will be a regular for me.

    • Ahhh that makes me so happy to hear, Lori. So glad the recipe turned out for you and that you loved it. Thanks for taking the time to leave a comment and star rating. It’s super helpful to other readers. 🙂

  14. Thank you for the recipe! Can’t wait to try! Quick question – can you substitute the maple syrup with honey?

  15. Just a tip, but you should offer directives on a non-vegan alternative for the milk. I for one am very interested in trying your oatmeal bars, but nowhere am I finding which percentage of milk I should use, or even if I should use more or less of it than almond milk. Any tips would be really appreciated.

    • I usually buy store brand natural peanut butter… ones with only 1-2 ingredients (peanuts + salt), I like Kroger Simple Truth PB or the store brands from Target, Trader Joe’s or Whole Foods. There’s usually oil on top and once you mix it, the peanut butter is drippy and you can drizzle it. Of course, once you get the bottom of the jar, it’s drier and no longer drizzly.

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